Can't double click .ase files to open them

As per title, double clicking .ase files doesn’t open them in Aseprite as expected - the Aseprite window flashes up then instantly closes.

The same thing happens if I have Aseprite open already, it doesn’t load into the already open instance, it attempts to open a new one which instantly closes as described above.

I’ve associated .ase files with the new executable and am using the latest source from Github.
Title bar shows: v1.2.21-dev.

I saw something similar mentioned in posts from 2019 but couldn’t find anything else so thought I’d post and see if it was something I am missing or whether it’s a bug / issue that has reoccurred.